Fig. 1. Schematic diagram of the proposed image authentication system.

Fig. 2. Schematic diagram of integral imaging. (a) Integral imaging capture system. (b) Digital reconstruction process.

Fig. 3. Experimental set up and some of the elemental images for true and false classes. (a) Experimental set up. (b), (c) Elemental images from the true class. (d), (e) Elemental images from the false class.

Fig. 4. (a) Amplitude, (b) phase, and (c) binary images of the encrypted elemental image from DRPE for the true class. (d) Amplitude, (e) phase, and (f) binary images of the encrypted elemental image from DRPE for the false class.

Fig. 5. (a) Original, (b) decrypted elemental images, and (c) reconstructed 3D image of the true class. (d) Original, (e) decrypted elemental images, and (f) reconstructed 3D image of the false class.

Fig. 6. (a), (c) Nonlinear correlation planes for the reconstructed 3D image and decrypted 2D elemental image of false class targets. (b), (d) Nonlinear correlation planes for the reconstructed 3D image and decrypted 2D elemental image of true class images.

Fig. 7. PCE results for (a) 2D and (b) 3D images with varied k values.